Description
Genuine Holley Secondary Diaphragm Spring Kit & Quick Change Vacuum Housing Kit This tuning kit enables you to easily and quickly change the vacuum spring on the vehicle The housing kit is the complete unit with the vacuum diaphragm Suits all Holley models 4150 & 4160 The spring kit is in brand new Holley packaging Part #20-13 The quick change vacuum housing kit is ‘new old stock’ (brand new, never used, old stock sat in storage)
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